Sewage-treatment plants tested as part of Kudela's study did not discharge much urea, but leaky septic tanks have been known to dump urea into the Chesapeake Bay and the Gulf of Mexico.
For Xiangshan Bay, main sources of nutrients are continental runoff input and the discharge of mariculture waste water, followed by Marine life and atmospheric sedimentation.
象山港海域营养元素的主要来源为陆源径流输入和海水养殖废水的排放，其次是海洋生物和大气沉降输入。
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The code was employed to optimize the cycle length, the peak power factor and the discharge burnup of the first cycle loading for the Daya Bay Nuclear Plant.